Nepean Bay Weather Forecast

    • 17
    • 24

    Possible shower. Windy

    • 15
    • 22

    Cloudy

    • 13
    • 22

    Cloud clearing

    • 11
    • 31

    Sunny

    • 12
    • 27

    Mostly sunny

    • 14
    • 24

    Partly cloudy

    • 13
    • 24

    Partly cloudy

Today 31 Jan Kangaroo Island

Cloudy. Medium chance of showers, becoming less likely in the late afternoon and evening. The chance of a thunderstorm in the late morning and afternoon. Winds southerly 25 to 40 km/h. Daytime maximum temperatures in the low to mid 20s.

Investigator Strait Coastal Waters

Wind
Southerly 15 to 25 knots.
Seas
1 to 2 metres.
1st Swell
West to southwesterly below 1 metre.
Weather
Partly cloudy. The chance of a thunderstorm in the late morning and afternoon.
Weather Situation
A low pressure trough lingers over northeastern parts of SA as a strong high pressure system moves into the Bight from the west today, pushing the trough out to the far northeast, with a south to southeasterly flow developing across the entire state by Sunday. The high continues to move eastwards, maintaining a ridge over southern parts on Monday and Tuesday, as the trough begins to move back into the northeast.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Nepean Bay Temperature Statistics View More

January Temperature

Kingscote Airport (7km)

  • Lowest 23 January, 2026

    7.3 °C

  • Average January

    19.9 °C

  • Highest 7 January, 2026

    41.5 °C

Climate (2021–Present)

Kingscote Airport (7km)

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  • Average Low 2021–2026

    9.2 °C

  • Average 2021–2026

    14.7 °C

  • Average High 2021–2026

    21.1 °C
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